Warman & Saskatoon's #1 Truck Repair Shop

Heavy Duty Semi Truck & Trailer Repair. Precision Tuning.

We keep Western Canada's commercial highway fleets, heavy construction machinery, and agricultural tractors operating at peak reliability with minimal downtime.

Call (306) 315-3000

Heavy Duty Shop Showcase

Real Repairs, Diagnostics, and Overhauls Completed at Our Warman Facility

Diesel Engine Fuel Injector Service and Rebuild

Engine Rebuilding & Injector Service

Semi Truck Service & Fleet Maintenance

In-Shop & Mobile Computer Diagnostics

Precision Engine Overhaul and Torque Testing

Precision Engine Overhauls & Rebuilds

Full-Service Facility

Warman's Premier Commercial Shop.

Located at 821 S Railway St in Warman, SK, our truck repair shop features dealer-level diagnostic systems for multi-brand commercial fleet repairs, CVIP safety compliance, and complete severe-duty rebuilds.

Advanced Engineering

Custom ECU Calibration & Tuning.

We engineer custom binary calibration files in-house. Every ECM remapping project is tuned for maximum fuel efficiency, air-to-fuel balance, low-end torque delivery, and thermal engine protection.

Engine Diagnostic and Calibration Computer

+30%

Horsepower Gain

+25%

Low-RPM Torque

-18%

Fuel Burn Reduction

Up to 2-Yr

Rebuild Warranty

Full-Spectrum Commercial Fleet Support

Heavy Truck & Trailer Repair & Diagnostics.

From 24/7 mobile roadside emergency breakdowns to deep DPF/DEF aftertreatment cleaning, engine overhauls, hydraulics, clutches, and laser frame alignment.

24/7 Emergency Breakdown Service & Mobile Mechanic

Stranded on Highway 11, Highway 16, or anywhere in the Saskatoon/Warman region? Our fully equipped mobile response units provide emergency roadside computer diagnostics, air leak repairs, regen forcing, and mobile mechanical dispatch.

DISPATCH NOW: (306) 315-3000

Master Diagnostic & Mechanical Capabilities

Advanced OEM Computer Systems & Heavy Duty Mechanical Master Technicians

Emissions & Aftertreatment

DPF / DEF Systems & Cleaning

Complete aftertreatment diagnostics, forced regens, thermal bake cleaning, and sensor replacements to clear derate modes and fault codes.

DPF Filter Cleaning, Baking & Flow Testing
DEF Pump, Doser Injector & Header Repair
SCR Catalyst & Nox Sensor Replacement
Derate Code Reset & Forced Regeneration

Safety & Braking

Brakes, ABS & Compressed Air

Complete commercial braking system service for trucks and trailers. SGI safety compliance, air compressor troubleshooting, and ABS module coding.

Air Brake Shoes, Drums, Pads & Rotors
Bendix, WABCO & Haldex ABS Module Repair
Air Dryer, Governor & Valve Replacement
Trailer Gladhand & Air Line Overhauls

Power Plant Rebuilds

Engine Overhaul & Diagnostics

In-frame and out-of-frame heavy diesel engine rebuilds, cylinder head resurfacing, injector replacement, and turbocharger upgrades.

Precision Cylinder Block Honing & Sleeve Kits
High-Pressure Fuel Injector & Pump Service
Variable Geometry Turbo (VGT) Replacement
Cooling System & Radiator Flush/Rebuild

Up to 2-Year Warranty

Drivetrain & Transmission

Clutches, Transmission & PTO

Heavy gear shifting solutions, clutch adjustment, transmission rebuilds, Power Take-Off (PTO) installation, and differential repairs.

Heavy Duty Dual/Single Disc Clutch Replacement
Eaton Roadranger & Allison Transmission Repairs
Power Take-Off (PTO) & Wet Kit Installation
U-Joints, Driveshafts & Rear End Differentials

Up to 2-Year Warranty

Fluid Power Systems

Hydraulics & Auxiliary Power

Complete hydraulic system diagnostics and rebuilds for dump trucks, trailers, cranes, and heavy construction machinery.

Hydraulic Pump, Motor & Valve Bank Repairs
Custom Hydraulic Hose Crimping & Fitting
Cylinder Re-sealing & Piston Replacement
PTO Hydraulic Pump Integration & Flow Testing

Commercial Vehicle Inspections

ANNUAL CVIP INSPECTIONS / SEMI-ANNUAL CVIP INSPECTIONS

Certified Commercial Vehicle Inspections (CVIP) are available for heavy-duty power units, commercial trucks, trailers, dollies, jeeps, and boosters on an annual or semi-annual schedule.

Commercial Power Units & Trucks (Classes A, C, and D)
Commercial Trailers, Lowboys, and Pup Trailers
SGI CVIP Commercial Safety Inspections

OEM Diagnostic Software Systems

Supported Commercial Engines & Heavy Equipment

Our shop is equipped with dealer-level laptop diagnostics, OEM wiring schematics, and bi-directional test software for virtually all North American, European, and Asian commercial diesel platforms.

High-Volume Commercial Engines & DEF Diagnostics:

Cummins ISX / X15 / ISL / ISM PACCAR MX-13 / MX-11 / PX9 Detroit 60 series / DD15 / DD13 / DD16 Volvo D12 / D13 / D11 Mack MP8 / MP7 International MaxxForce Caterpillar C15 / C13 / C7 / 3406

Medium Duty, Equipment & Global Brands Supported:

Kenworth Peterbilt Freightliner International Volvo Truck Mack Hino Isuzu Mitsubishi Fuso Scania CAT Equipment Perkins Diesel Kubota Diesel

Custom Software Calibration

More Torque. Higher Horsepower. Lower Fuel Burn.

Unlock hidden working power without buying new machinery. High-performance ECM tuning programs engineered in Warman, SK.

Our 4-Step Software Calibration Standard

Safe, Reversible, and Engineered for Maximum Operating Output

STEP 01

Workload Evaluation

Analyzing machine duty cycles, terrain demands, and target power outputs.

STEP 02

Diagnostic Scan & Backup

Full dealer-level electronic check and complete original factory software file backup.

STEP 03

Custom In-House Flash

Tailored calibration adjustments to torque limiters, fuel pressure, and boost maps.

STEP 04

Load Verification

Real-world operational load testing to verify exhaust gas temperatures and safety parameters.

Agricultural Machinery

Ag Equipment Custom Tuning

Supported platforms: John Deere, Case IH, New Holland, Claas, Fendt, Massey Ferguson. Increase working field speed and lower fuel burn per acre by up to 18%.

Commercial Rigs & Construction

Highway Rigs & Heavy Equipment

Custom ECU tuning for Kenworth, Peterbilt, Freightliner, Volvo, Mack, Isuzu, and Hino trucks, alongside Caterpillar, Komatsu, Hitachi, and Bobcat fleets.

OEM & High-Durability Components

Heavy Parts Stocked for Fast Repair Turnaround.

We stock and supply top-tier engine components, turbochargers, fuel injectors, air brake valves, and drivetrain parts.

Industry Standard Component Partners

Direct Replacement Heavy Duty Fleet Parts

We maintain rapid parts distribution networks across Western Canada to eliminate repair downtime for your trucks and machinery.

MAHLE DELPHI CUMMINS GENUINE DETROIT DIESEL CATERPILLAR PACCAR PARTS BOSCH FUEL INJECTION ALLISON TRANSMISSION BENDIX AIR BRAKES MERITOR & EATON AXLES

Work-Ready Fleet Inventory

Pre-Owned Semi Trucks & Equipment Sales.

Pre-owned commercial heavy trucks, commercial trailers, and agricultural machinery fully inspected and safety certified by our heavy-duty mechanics.

Proven Saskatchewan Fleet Performance

Trusted by Fleet Managers & Drivers.

Read how our truck repair shop, emergency diagnostics, and custom tuning keep commercial fleets and farms moving.

"Supreme Diesel got our heavy semi truck and trailer back on the road fast after an electrical fault code shutdown. Their roadside diagnostics saved us a massive tow bill to Saskatoon."

— Mark S. | Fleet Operations

"Had a complete engine overhaul done on my Peterbilt. Knowing it came with an up to 2-year warranty gives total peace of mind when hauling heavy loads across Western Canada."

— Dave K. | Commercial Highway Driver

"Custom tractor tuning from Supreme Diesel gave our farm machinery noticeable extra pulling torque during seeding. Fuel burn per acre dropped significantly."

— Jason T. | Prairie Farm Operator

Warman & Saskatoon Service Desk

Contact Our Truck Repair Shop Desk.

Visit us at 821 S Railway St in Warman or request mobile roadside assistance for your commercial vehicles.

Book Service / Request Quote

Your Name / Company

Phone / Email Address

Truck / Trailer / Machine Details

Requested Service

Message / Fault Details

Shop & Location Details

Physical Shop Address:
821 S Railway St, Warman, SK S0K 0A1

Primary Phone Desk:
(306) 315-3000

Email Support:
info@supremediesel.net

Shop Hours:
Monday – Friday: 8:00 AM – 5:00 PM CST
24/7 Mobile Service Available for Roadside Emergencies